Doppler and pressure technology
Rechargeable or replaceable power case for VLI sensor and loggerUnique performance for a velocity sensorAutonomous area velocity solution

VLI Digital area velocity sensor

  • Battery powered area velocity sensor
  • Velocity measurement starts at 25 mm of water
  • Ultra compact to ultra long autonomy
  • Quality and accuracy of the measurement height
  • Unique performance for a velocity sensor
  • Advanced expertise of the velocity measurement quality


VLI is designed to optimize the overall performances of water height / velocity measurements when pairing to the autonomous IJINUS solutions (Logger + Energy + Com). We have also added GSM / GPRS communication.
Continuous wave Doppler flowmeter is ideal for portable flow surveys (rechargeable lead battery) and permanent installations (Lithium battery).

VLI Digital area velocity sensor

Quality and accuracy of the height measurement

Equipped with a flat digital pressure sensor, it provides a measure of height from 2 mm of water. Compensated in temperature and pressure it allows a level calibration according to the atmospheric pressure, and avoiding potential measurement drift. It is also really fast to install.

Unique performance for a velocity sensor

Velocity measurement from 25 mm of water.From Its unique digital technology, it is possible on storm overflow applications, to use an overflow detector to seek only a height measurement to verify the pertinence of launching a longer velocity measurement that require more energy.

Different needs, different solutions :

– Autonomous stationary equipment installation : with high capacity battery pack
– Temporary measurement campaign : the sensor is directly powered by the data loger internal battery


VLI Digital area velocity sensor documentation





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